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THOMAS VII. McCUL-LOCH, OF MONMOUTH, ILLINOIS, 'ASSIGNOR TO GEORGE II. RICH, OF

GENEVA, ILLINOIS; AND GEORGE H. RICH ASSIGNOR TO THE IIA-RT GRIN-SEPARATOR'.

COMPANY. n

Letters Patent'lio, 73,736, dated January 28, 1868.

IMPROVEMENT IN GRAIN-SEPARTORS.

TO ALL WHOM IT MAY CONOERN;

Be it known tliatl, THOMAS H. M cOULLoCH, of Monmouth', in the county ofWarren, and State of Illinois, have invented anew and useful Improvement'in Grain-lSeparators; and I do hereby declare that the following is a full, clear, and exact description ot' the same, reference being had to the accompanying drawings, and the letters and figures marked thereon, which form part of this specification. In said draw'ings--- Figure I shows a sideelevation of my invention, i

Figure 2 is 'a vertical section of the sameat the line a in 6g. 3,

Figure 3 is a plan or top View thereof, and I Figure 4 is an isometrical view of' one of the rollers in saidV machine.

Similar letters of reference in thedili'erent figures denote corresponding parts of my invention.

The nature of my invention consists in the employment of one or more cylinders whose convex surfaces are filled with cells or cups, of such dimensions as will allow grains of wheat to'lic in the same, but not grains of oats, which are longer than grains of wheat, so that ivhile'wheat will lie securely in said cells, as hereinafter described, one end of the oats will project above the surface of the cylinder, and, as the cylinder revolves, the wheat is carried over, and-deposited. in its appropriate receptacle, while the oats arebrushed'back, and are carried out at their appropriate outlet,` as hereinafter more fully described.

To enable those skilled in the art to understand theconstructionV and operation of my invention, I will proceed to describe the same with particular-ity, making reference to the aforesaid drawings.

A'represents the frame,`supporting the box enclosing the mechanism for separating the grain, and B repsc scnts the hopper, through which the grain is introduced into the machine; A', in tig. 2, representing the lid or cover, which is removed in g. 3; C D are two-gear-wheels, iixed upon the ends of the shafts of the rollers G H, gearing into each other, as shown, which 'are also provided with-drums for the belts a b, which pass around the drums EF upon the ends of the shafts of the revolving brushes L When motion is communicated to the wheel by the. handle d, or any other means, in ithe ldirection of the arrows marked upon the same, the

wheels D E F, and the cylinders and brushes respectively thereunto-attached, move as indicated by the arrows.

marked thereupon. The cylinders G and I-I are supported uponjournals restingl in suitable supports in the ends ofthe box enclosing them, the ends at which the hopper is placed being arranged higher than the opposite ends, and the two rollers or 'cylinders being arranged contiguous to each other, as shown, so as to form a gradually-inclined channel from the hopper H to the'ou'tlet Nywvhere the oats pass out from the machineA The convex surfaces of said rollers are filled with the cells marked c, of the dimensions and for the purposes aforesaid. Directly above, and parallel tothe said cylinders, are arranged the revolving brushes, marked L M in the. drawings, operating as hereinafter described. 'Instead 'of brushes, as shown, any equivalent device may be employed.

Having described the construction oi' my'invention, I will now describe its operation.

Motion being'eommunicated to the mechanism in such a manner as to causethe two cylinders G H to revolve upwards, and in opposite directions, las indicated by the arrows aforesaid, and each brush L M in the direction of the cylinder directly below it, the grain is introduced into the machine through the hopper H, and, falling upon the revolving cylinders, Vthc wheat is ca-ughtin the cells c, and carried pver to the sides of the machine, falls upon the inclined bottom P, and passesinto its proper receiver, as indicatedby the red arrojvs in` 2. The oats in the mean time, on account ot' the dimensions of the cells e being insufficient to contain them, gradually pass along in the inclined channel betweenl'ithe cylinders, and go out at the spout as shown by the'red arrows in fig. 3. Should any of the oats ind lodgment in the cells, still, on. account of their length, one end ivouldproject above the surface of the cylinder,so that when it reaches the top, in its revolu tion,\`it isat once brushed back 'by the operation of the brushes, and thus the wheat is obtained perfectlyclear and free from all larger grains, as oats and corn, and thedike.

i Instead of two contiguous cylinders, as shown, a single cylinder may be employed; operating against a vertical partition, though, oficourse, the capacity of a single-cylinder machine would be only one-halt` of a two-cylinder maehine. The same principle inay'also be applied upon the interior surface of a. hollow cylinder,

by employing suitable conveyers and arrangements for that purpose.

Having described the construction and operation. of my invention, I will now specify what Iclaim as `new therein, and desire to secure by Letters Patent. l

1. I claim the employment of one or more cylinders, with cellular eonvex surfaces,v arranged and operating substantially as and for the purposes specified. i

2.- I claim, in combination with said cylinders, the employment of a brush er brushes, arranged and operating as and for the purposes specied and shown. i

' T. H. McCULLOCH.

Witnesses:

JAMES FINDLEY, R. N. THOMPSON. 

